Switch what left and right keys do in RTL

[johnjesse]

Fix for #837:

Basically, it used the dir prop to decide how to handle the left and right arrows being pressed, switching what they do in RTL.

I've also added the missing dir prop to the DayPickerProps interface.

The docs for dir usage are missing right now... it would be good to add them, I'd be happy to do that as part of this PR - although the PR template warns against making any changes to the docs

[codecov]

Codecov Report

Merging #845 into master will decrease coverage by 0.61%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##           master     #845      +/-   ##
==========================================
- Coverage     100%   99.38%   -0.62%     
==========================================
  Files          15       15              
  Lines         645      653       +8     
  Branches      141      145       +4     
==========================================
+ Hits          645      649       +4     
- Misses          0        4       +4

Impacted Files	Coverage Δ
src/DayPicker.js	97.7% <66.66%> (-2.3%)	⬇️

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[codecov]

Codecov Report

Merging #845 into master will decrease coverage by 0.61%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##           master     #845      +/-   ##
==========================================
- Coverage     100%   99.38%   -0.62%     
==========================================
  Files          15       15              
  Lines         645      653       +8     
  Branches      141      145       +4     
==========================================
+ Hits          645      649       +4     
- Misses          0        4       +4

Impacted Files	Coverage Δ
src/DayPicker.js	97.7% <66.66%> (-2.3%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 39ad48e...3a892a7. Read the comment docs.

[codecov]

Codecov Report

Merging #845 into master will decrease coverage by 0.61%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##           master     #845      +/-   ##
==========================================
- Coverage     100%   99.38%   -0.62%     
==========================================
  Files          15       15              
  Lines         645      653       +8     
  Branches      141      145       +4     
==========================================
+ Hits          645      649       +4     
- Misses          0        4       +4

Impacted Files	Coverage Δ
src/DayPicker.js	97.7% <66.66%> (-2.3%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 39ad48e...3a892a7. Read the comment docs.

[codecov]

Codecov Report

Merging #845 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff          @@
##           master   #845   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files          15     15           
  Lines         645    653    +8     
  Branches      141    145    +4     
=====================================
+ Hits          645    653    +8

Impacted Files	Coverage Δ
src/DayPicker.js	100% <100%> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 39ad48e...260a11f. Read the comment docs.

[gpbl]

Awesome, thank you – sorry for being so late on this!